निम्नलिखित कथनों में से कौन एक सही नहीं है?
Which one of the following statements is not correct?
Collection of verified questions for Prakash under General Science. Includes previous year exam questions with official answer keys and step-by-step solutions.
Which one of the following statements is not correct?
Which of the following colours is seen in the middle of a rainbow?
The Sun appears red while setting due to -
Red light is used for danger signals because -
The sky appears blue because -
The blue colour of the sky is due to -
Assertion (A): Danger signals are made of red colour. Reason (R): Red colour suffers the least scattering. Select the correct answer using the code given below:
Which of the following types of mirrors is used to view traffic coming from behind a car?
When a person enters a dark room from a brightly lit area, they cannot see clearly for some time, but gradually objects become visible. This is due to -
We see green grass as green because -
Assertion (A): Small glass beads fixed on traffic road signs sparkle brightly when light falls on them. Reason (R): Light is totally reflected when the angle of incidence exceeds a certain critical value as light travelling through a denser medium encounters a rarer medium. Code:
The concept of an expanding universe is based on -
The final image formed by an astronomical telescope is -
Dispersion of light is possible through -
An astronaut perceives the colour of the sky as -
When an object is placed between two parallel plane mirrors, the number of images formed is -
Light consists of seven colours. What is the method of separating these colours?
How many images will be formed when a point source of light is placed between two parallel plane mirrors?
When the sky is observed from an aeroplane flying at a high altitude, it appears -
When a mirror is rotated through an angle $$\theta$$, the reflected ray will rotate through an angle of -
The two boundary/marginal colours of a rainbow are -
Relief/cure from myopia is achieved through -
In which direction is a rainbow visible at 12:00 noon?
The correct sequence of colours in a rainbow is -
Consider the following statements - 1. The blue appearance of the sky is due to scattering of light. 2. The seven colours of the rainbow are due to scattering of light. 3. The red appearance of the Sun at sunrise is due to scattering of light. Which of the above statements is/are correct?